On 02/08/2018 10:35 PM, David Rientjes wrote:> The KVM_SET_GSI_ROUTING ioctl does a vmalloc() of> sizeof(struct kvm_irq_routing_entry) multiplied by a user-supplied value.> This can be up to 4096 entries on architectures such as arm64 and s390> (and the upper bound may be increased on s390 eventually).> > This can produce a vmalloc allocation failure warning:> [...]> kvm_vm_ioctl+0x910/0x15e0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4153